|January 17, 2012, 05:43||
pressure equation in PISO or SIMPLE algorithm
Join Date: Jun 2011
Posts: 141Rep Power: 6
I have a question about pressure equation in PISO or SIMPLE algorithm please guide me in this problem
pressure equation is
laplacian(rAU, p) == fvc::div(rAU*UEqn.H())
but in OpenFoam rAU*UEqn.H() is interpolated on cell faces
why we do this work ?
|July 8, 2013, 22:36||
Join Date: Jun 2012
Location: Torino, Italy
Posts: 675Rep Power: 8
|July 22, 2013, 14:17||
Join Date: Jan 2012
Location: Madison, Wisconsin, USA
Posts: 54Rep Power: 5
I assume you are looking at incompressible flow solver. "rAU*UEqn.H()" here is actually velocity.
original equation should be "laplacian(rAU, p) == fvc::div(phi) "
phi = fvc::interpolate(U) & mesh.Sf();
U = rAU*UEqn.H()
You should look up Prof. Jasak's thesis, he talked about this in detail in his thesis.
|Thread||Thread Starter||Forum||Replies||Last Post|
|About simple algorithm in simpleFoam||JinBiao||OpenFOAM Running, Solving & CFD||0||December 15, 2011 03:06|
|Implicit elliptic pressure field equation.||TheBoyce||Main CFD Forum||2||June 3, 2011 13:08|
|Constant velocity of the material||Sas||CFX||15||July 13, 2010 08:56|
|SIMPLE algorithm||jika||Main CFD Forum||2||October 22, 2009 06:46|
|PISO vs. SIMPLE||benedikt flurl||Main CFD Forum||2||April 14, 2005 06:54|